Tim Lamb wrote:
So the gas fitter came to call....

and expressed concern about using an ion exchange (salt) water softener
with a thermal store. Corrosion of heat extract coil due to salt content
in treated mains supply.

Google hasn't found much apart from now discounted worries about boiler
heat exchangers.

Gledhill technical advice dept. were only accepting voice messages
(poets day?)

Anyone come across this. In 25 years it has failed to penetrate either
the side walls or the coil in our hot tank.


purely on the basis of gut feel that if the level of salt in the water
cannot be tasted then I cant really credit that corrosion can be a risk.

Never had a water softener and hated showering in places where they have
been fitted so no practical experience to offer.
Can you get thermal stores with stainless steel heat exchangers. Might
open up a whole load of electrolytic problems? Mine is all copper and I
don't recall being offered a choice of materials when I had it custom made.